Machine for manufacturing nails from wire



Sept, 13, 1927.

J.' wlKscH'rRM MACHINE FOR MANUFACTURING NAILS FROM WIRE Filed oct. 17. 1925 G SheetS-.Sheet 1 sept. 13,1927.

J. wlKscHTRM MACHINE FOR MANUFACTURING NAILS4 FROM WIRE vFiled ot; 17. 1925 e sheetsfsn'et 2 e sheetsfsneet s MACHINE Fon MANUFACTURING NAILs Fnpu WIRE Sept. 13, 1927. l l

1,642,597 Sept 1927 J. wlKscH'rRMl MACHINE FOR MANUFACTURING NAILS FROM WIRE Filed Oct. 1'7, 1925 6 Sheets-Sheet 4 Ven 011- sept'. 13,1921. 1,642,591

J. WIKSCHTRM MACHINE FOR `MANUFACTURING NAILS FROMWIRE Filed oct. 1v. 1925 s sneetsfsneet 5 Aww@ , 1,642,597 L Sept" 13 1927 J. wlKscHTRM MACHINE -FCR MANUFACTURING NAILS FROM WIRE FiledOot. 17. 1925 6 SheetsfShec-at 6 fn V611 011: Ja/ko Wam/wm Patented Sept. 13, 1927.

UNITED STATI-:s

Pari-:NTl OFFICE.

.Taxon wixscnrnm, or. DUSSELDORF, GERMANY.

EACHINE FOR MANUFACTURING NAILS FROM WIRE.

Application led October 17, 1925, Serial No. 68,107, and in Germany July 9, 1925.

'The invention relates to a machine for manufacturing nails from wire.

The substantial novelty consists in that the clamping jaws and point lcutters are 5 journalled together side by-side in one p air of operating levers whose axis of rotation is at right angles to the axis of the wire. The displacement of the wire into register 'with the clamping jaws or' point cutter takes In place in the axial directionof the pair of operating levers. y

The rotary movement of the operating levers is entirely positive.

The nail head stamping tooll is mounted l5 in a lever which is journalled parallel to the wire laxis and. adapted to be displaced longitudinally. l

In order that myvinvention may be more clearlyvv understood and more readily carried into practice I have appended hereto six sheets ofrdrawings,in which: v

, Fig. 1 is a plan view, Fig. 2 is a side ele- .'vation. Fig. 3 is a section on line 3 3 in Fig. 1 in the direction of the arrow m; Fig. -5 4 -is a section on line 4-4 in Fig. 1 in the direction of the arrow y; Fig. 5 1s a section online 5-5 in Fig. l in the direction of the arrow s. Figs. 6 and 7 show the movement of the pair of operating levers in side elevation in two different working positions; andFigs. 8-18 show details. vIn the machine frame 1 is `ournalled, in known manner, the main sha 2 on which are mounted the cam discs 19, 29, 46, 56, 66, `67 for the various 'workingmovements The operating levers 5, 6 arejournalled in two bearings 3, 4 arran ed" in the ma chine frame. Said levers orm pivots of approximately semi-circular shape at the points of their bearing. The cam-lifts correspond to the amount of movement necessary (Figs. 14-17 The levers 5, 6 are machined axially forming a hollow space concentric with the bearing and extending over the whole length of said levers. In the one halfof said hollow space is mounted a two-part shaft 8 provided internally with springs 7, which serve to pressthe levers 56 into their bearings; whilst on the other side, instead of the shaft 8, a longitudinally movable shaft 9 is situated. The clamping y`jaws 10 and the point -cutters 11 between their bearings 3 and 4 are situated on said levers and are-secured vto the levers' 5 and '6 by means of hookshaped bolts 12 provided in the levers 5, 6 and held therein by the screws 13.

The longitudinal adjustment of these tools is eiected, in known manner, by means l of screws 14. On an extension of the'levers 5, 6 and projecting beyond their bearing are the operating arms 15. The yielding shaft 8 at the axis o f rotation of the levers 5, 6 is situated .at the side which carries the operating arms 15.

The movement ofthe operating arms 15 is effected by means of a slide 16Amounted in the machine frame; said slide is connected to a lever 18 journalled at 17 and ac-v tuated by a cam disc 19 mountedon the main shaft 2. ,The slide 16 is fork-shaped at the end facing the operating arms 15 (Figs, 6, 7). The two-fork arms 20 are arranged in a vertical plane and their ends are rounded off. Link members 21 are adapted to press against these rounded-olf portions, and to engage with the similarly rounded-oli" ends of the operating arms '15. On the operating arms 15 are mounted lateral rollers 22 between which are ,situated two guide members 24 mounted on a pivot 23 secured to the slide 16 and pressed against the rollers 22 by means of a spring 25. The two guide members 24 are provided near their free ends with inclined surfaces 26.

The displacement of the shaft 9 is effect# ed by means of a two-armed lever 28 pivoted at 27 and actuated b a cam disc 29 mmunted on the main sha t 2 (Figs. 8, 10, 11

The shaft 9 is pressed against the lever 28 by means of a spring 30 mounted on the machine frame 1. Y

The shaft 9 is provided, at the level of the wire-feed with a wire guide 31. Said wire guide contains a slot which is not straight, but is obliquely widened at each end. The surface 32 of the lot in the front or feed portion of the wire guide andthe surface 33 in the rear portion of the guide are each parallel to the path of the wire; the distance etween the two parallel surfaces 32, 33 corresponding to the thickness of the wire to be Worked.

In the upper lever 5 is journalled at34 a double-armed lever, one arm 35 of which is jecting lug on the lever 5. The other lever arm or stop member 38 is so bent that its end 39 serves, in the point-cutt-i11g-positions, as an abutment for the wire 40. rfhe position of the abutment surface 39 can be adjusted by means of the screw 36.

A head-clamping tool 41 is mounted in a supporting lever 42 which is journalled laterally to the wire axis, in the bearing 43, situated at the level of the wire 40 and parallel thereto, so that the longitudinal movement of the lever 42 together with the headstamping tool 41 can be effective, in known manner, by means of a stamping lever 45 journalled at 44 and actuated by the cam disc 46 mounted on the main shaft 2. For the purpose of positively returning the lever 42, it is provided with a hook-shaped projection 47 engaging a projection 48 on the stamping lever 45 (Fig. 13). -The rejections 47, 48 are situated exactly in t ic axis of rotation of the lever 42.

The lever 42 is held in permanent ontact with the stamping lever 45 by a wedge 49. The contact surfaces of the projections 47, 48 are situated vertically above the pivot 44.

The lever 42 carries a projection 50 with an adjustment screw 51, which rests upon a rod 52, the vlatter resting on one arm 53 of the two-armed lever plvoted at 54, the other lever arm 55 being actuated by the cam disc 56. The hook-shaped end 57 of a rod 58, also rests on the projection 56 and is held thereon by the spring 59 mounted on the machine frame 1. The rod 58 is also rovided with a forked projection 60 engaging a lever 62 which is pivoted at 61 and the end 63 of which is laterally bent and terminates in the proximity of the cutters and serves as nail ejector.

The feeding slide 64 is actuated by the pitman 65 by means of the cam disc 66 mounted on the main shaft 2; the counter cam disc 67 serves for the positive return movement. Av separate locking lever 68 revents backward movement of the wire uring the return movement of the, feeding slide 16.

The manner of operation of the machine is as follows:

Fig. 1 shows the machine with the parts in their position subsequent to the finishing of the nail head. The two levers 5, 6 are in working position. The link-members 21 are brought into the position shown in Fig. 6 by the forward movement of the slide 16. The pressure of said levers is taken up by the two-fork-ends 20 so that the slide 16, the cam disc r19 and the main shaft 2 are relieved of pressure.

The shaft 9 is in the position shown in Fig. 8. The wire 40 is bent to the right by the shaft 9 behind the wire, guide 31. The projecting end of the Wire is, however,

League? brought back into a position parallel with the wire feed by means of the two guide surfaces 32, 33, so that the clamping jaws 10 may correctly clamp the wire. This correct position of the shaft 9 is ell'eeted by the of the cam disc 66 (Fig. 18) comes into fi action and feeds the wire so far that the nail head, formed in the die of the clampinf.,r jaws, emerges therefrom (Fig. 9). The wire remains in this position until the shaft 9 is brought out of the path of the stam Jing tool 11 by the lift c of the cam d isc 29 Fig. l2), whereupon the wire is fed further by means of the lift l of the cam disc 66 into the position shown in Fig. l() and in accordance with the length of nail to be produced. The wire guide 31 is, at this stage, in the position in which the wire may freely pass between the two parallel surfaces 32, 33.

The slide 16 is now moved back by the cam disc. 67, whereby the shaft. 9 is further displaced to the left, by the lever 28 by its passing from the surface c to the surface e on the cam 29, and, simultaneously, the wire is brought to the level of the point cutter 11 (Fig. 11). The wire is held in this position, on the one hand on the surface 63 and on the other hand on the abutment surface 39, so that the wire is again situated parallel to the feed and comes in the correct posit-ion between the cutters. The slide 16 is, by a second lift on the cam disc 19, again moved to the left into the position shown in Fig. 6, whereby the cutters 1l form the nail point. Now on effecting the return movement of the slide 16 and the opening of the cutters 11, the surface f of the cam disc 56 is brought under the end 55 of the doub1earmed lever, whereby the other end 53 is pressed down by the action of the spring 59 and the lever 42 is rocked in its bearing. The lever 62 engaging in the fork 60 of the rod 58 is likewise moved downwardly during said downward movement whereby its end 63 hits the finished nail and ejects the same downwardly. Simultaneously with this movement the4 pre-upsetting device of the head stamping tool is brought into the same level as the jaw channel. The` shaft 9 is again broughtinto the position shown in Fig. 8 by themovement of the lever from the cam surface e to the cam surface a: and the levers 5, G, are again closed by the forward movement of the slide 16. The Wire end projecting from the lOS ` two-part shafton one side at the center of rotation of the said pivots, a'longitudinally movable shaft on the other side at said center of rotation of the pivots and springs arranged in the two-part lever adaptedto press the operating levers into their bearings.

2. VIn a machine for manufacturing'nails from wire, clamping jaws and point cutters journalled side by side in one pair of. operating levers, a fork-shaped slide for imparting positive opening and closing .movements to the operating levers, spring pressed guide members between links carried by the oper- `ating levers and the forks of the slide, a

nail head tool mounted-in a supporting lever journalled laterally and parallel to the wire at the level of same, a stamping lever actuated by a cam on the main shaft for longitudinally moving the supporting lever and hook-shaped projections on the stamping lever and the .supporting lever arranged exactly in the axis of the said supportingy lever for connecting the latter to the stamping lever.

' 3. In a machine for manufacturing nails from wire, clamping jaws and point cutters journalled side byside in one pair of operating levers a fork-shaped, slide for imparting positive opening and closing movements to the operating levers, spring pressed guide members between links carried by the operating levers and the forks of the slide, a nail head tool mounted in a supporting lever journalled laterally and parallel to the wire axis vat the level of same, a stamping lever actuated by a cam on the main shaft for longitudinally moving the supporting lever, hook-shaped connecting members on the supporting lever and the stamping lever, and a projecting lug on the supporting lever resting upon a rod-like member supported by the one arm of a pivoted lever the other arm of which engages with a cam on the main shaft.

4. In a machine for manufacturing nails from wire, `clamping jaws and point cutters journalled side by side in one air of operating levers, a fork-shaped slide for imparting positive opening and closing movements to the operating levers, spring pressed guide members between links carried by the operating levers and the forks of the slide, a nail head tool mounted in a supporting lever journalled laterally 'and parallel to the wire axis at the level of same, a stamping llever actuated by a cam on the main shaft for longitudinally moving the supportmg Y lever, hook-shaped connecting members on the supporting'lever and the stamping lever,

a projecting lug on the supporting lever resting upon a rod-like member supported by the one arm of a pivoted lever the other arm of which is engaged by a cam on the main shaft and a second rod-like member urged downwardly by a spring ,secured to the machine frame and resting with its hookshaped end upon said supporting lever.-v

5-. In a machine for manufacturing nails from wire, clamping jaws and point cutters journalled side by side in one pair of operating levers, a fork-shaped,` slide for imparting positive Aopening and closing movements to the operating levers, spring pressed guide members between links carried by the operating levers and the forks of the slide, a nail head tool mounted i'n a supporting lever journalled laterally and parallel to the wire axis at the level of same, a stamping lever actuated by a cam on the main shaft lever, hook-shaped connecting members .on the supporting lever and the stamping lever,

a projecting lug on the supportinglev'er N resting upon a rod-like member supported by the one arm of a pivoted lever the other arm of which is engaged by a cam on the main shaft, a second rod-like member, urged downwardly by a spring on the machine frame and resting with its hook-shaped end upon said supporting lever, a fork-shaped projection on said second rod-like member and an ejecting lever guided in said forkshapcd projection and mounted 0n the machine frame having a bent end terminating in the proximity of the cutters and serving as an ejector for the nails.

6. In a machine for manufacturing nails from wire, clamping jaws for holding the' a two-part shaft on one side at the center of rotation of said pivots a longitudinally movable shaft on the other side at said center of rotation of the pivots, an obliquely widened wire guide channel in said longitudinally movable sl1aft,.thev surfaces of the channel situated in the front portionA towards the wire feed andin the rear portiontowards the middle respectively being made parallel relative to the wire feed and the distance between the two parallel surfaces corresponding to the thickness of the wire.

7. In a machine'for manufacturing nails for longitudinally moving vthe j supporting ifo from wire, clamping jaws and point cut- 13 Tit) ters joui-nailed side by side in one pair ot operating levers and held in their bearings by hook-shaped bolts having screws arranged at the side of the operating levers facing the wire feed and a stop member on one of said operating levers rotatable in a plane at right angles to the Wire feed and adjustable by means of a screw the free end et which serves as an abutment for the wire in the point-cutting position. l

8. In a machine for manufacturing nails from wire, mean.v for holding the wire during the manufacture of the nails and means 'lor cutting the points of the nails, said Wire Vholding means and said point cutting means being journalled side by side in one pair of operating levers the axes of rotation olf' which being arranged in the same plane and at right angles to the axis of the wire, said levers forming pivots of approximately semi-circular shape at their bearing points, a two-part shaft on one side at the center ot rotation et' the said pivots, a longitudinally movable shaft on the other side at said center of rotation of the pivots and springs arranged in the two-part lever adapted to press the operating levers into their bearings, a. positively reci prorated fork-shaped slide for opening and closing said operating levers, spring pressed guide members pivoted to said fork-shaped slide, rollers arranged on links carried by said operating levers, said rollers cooperating with inclined surfaces provided at said spring pressed guide members, the free end of said links working together with the fork of the said slide for the purpose of yieldingly but positively actuating said operating levers. j

9. In a machine for manufacturing nails trom wire, means for holding the Wire during the manufacture of the nails and means :t'or cutting the points of the nails, said wire holdin@ means and said point cutting means being journalled side by side in one pair ot Lafraise? operating levers the axes ot' rotation et which being arranged in the same plane and at right angles to the axis of the. wire, said levers forining pivots ot' approximately semi-circular shape at their bearing points, a two-part shal't on one side. at the center of rotation ot the said pivots, a longitudinally movable shaft on the other side at said center of rotation of the pivots and springs arranged in the two-part lever adapted to press the operating levers into their bearings, a positively rtwiprocated fork-shaped slide tor openingl and closing said operating levers, spring pressed guide members pivotcd to said :fork shaped slide,

rollers arranged on links carried by said operating levers, said rollers cooperating with inclined surfaces provided at said spring pressed guide members, the lree end of said links working together with the tori: ot' the said slide for the purpose ol yieldingly but positively actuating said operating levers. a nail head tool mounted in a supporting lever jonrnalled laterally and parallel at the level olE the wire to be operated upon and n stamping lever actuated by a cam on the main shaft ot the, machine and adapted to longitudinally move the said supporting lever for thel said nail `head tool.

lt). In a machine for manufacturing nails from wire comprising operating levers arranged in pairs, a slide for opening and closing said operating levers, clamping jaws and joint cutters journalled side by side in one pair of operating levers, a nail head tool mounted in a supporting lever journalled laterally and parallel to the wire axis, a wire feed, a cam disc actuating said wire feed, a projection on said disc for causing au initial lift by which the tinished upset nail head is forced out of the clamping jaws prior to the feeding oi? the wire between the cutters.

In testimony whereof l atlix my signature.

J AKOB WIK SCHTRM. 

